There are 36 boys and 44 girls in a class. The average score of boys is 40…
2025
There are 36 boys and 44 girls in a class. The average score of boys is 40 points and girls is 35 points. Then what will be the average score of the class?
Answer: A. 37.25 — Method: Use a weighted average of the two groups. Number of boys = 36, average of boys = 40. Total score of boys = 36 × 40 = 1440. Number of girls = 44,…
- A.
37.25
- B.
42
- C.
43
- D.
34
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Correct answer: A
Method: Use a weighted average of the two groups.
Number of boys = 36, average of boys = 40. Total score of boys = 36 × 40 = 1440.
Number of girls = 44, average of girls = 35. Total score of girls = 44 × 35 = 1540.
Total students = 36 + 44 = 80. Total score = 1440 + 1540 = 2980.
Class average = Total score ÷ Total students = 2980 ÷ 80 = 37.25.
Answer: 37.25
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